English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
ARTICULATING PLURAL MARKERS
- When a singular noun ends in a vowel or voiced consonant (such as b, d, g), the s plural marker is realised as /z/:
Boys /bɔɪz/
Cars /kɑːz/
Barber /ˈbɑːbəz/
Legs /legz/ - When a singular noun ends in a voiceless consonant (such as p, k), the s plural marker is realised as /s/:
Laps /læps/
Blacks /blæks/ - When a singular noun ends in sibilant (hissing) sounds such as s, ch, sh, the es plural marker is pronounced as /iz/
Classes /klɑːsiz/
Churches /tʃɜːtʃiz/
Clashes /klaʃiz/
GAB

I love this, it really interestin.
Thanks allot
Thanks a lot for the lessons. I have improved remarkably.